<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #l1{color: green}
        .c1{color: blue}
        input[type="text"],body>p{background-color: red}
        body>div>div>p{color: pink}
        div div p{background-color: yellow}
        /*未访问*/
        a:link{color: red}
        /*访问过*/
        a:visited{color: pink}
        /*悬停*/
        a:hover{color: green}
        /*点击*/
        a:active{color: yellow}
    </style>
</head>
<body>
<a href="01选择器.html">超链接1</a>
<a href="../b.jpg">超链接2</a>
<a href="https://www.youku.com">超链接3</a>

<ul>
    <li id="l1">刘德华</li>
    <li>张学友</li>
    <li class="c1">郭富城</li>
</ul>
<p>香蕉</p>
<p class="c1">苹果</p>
<input type="text">
<input type="password">
<div>
    <p1>p1</p1>
    <div><p>p2</p></div>
    <div><div><p>p3</p></div></div>
</div>
</body>
</html>